13313318 has 4 divisors (see below), whose sum is σ = 19969980. Its totient is φ = 6656658.

The previous prime is 13313309. The next prime is 13313327. The reversal of 13313318 is 81331331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13313309) and next prime (13313327).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13313293 and 13313302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3328328 + ... + 3328331.

It is an arithmetic number, because the mean of its divisors is an integer number (4992495).

Almost surely, 2^13313318 is an apocalyptic number.

13313318 is a deficient number, since it is larger than the sum of its proper divisors (6656662).

13313318 is an equidigital number, since it uses as much as digits as its factorization.

13313318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6656661.

The product of its digits is 648, while the sum is 23.

The square root of 13313318 is about 3648.7419749826. The cubic root of 13313318 is about 237.0075068688.

Adding to 13313318 its reverse (81331331), we get a palindrome (94644649).

It can be divided in two parts, 13313 and 318, that added together give a palindrome (13631).

The spelling of 13313318 in words is "thirteen million, three hundred thirteen thousand, three hundred eighteen".